/Engine/Source/Runtime/AssetRegistry/Public/AssetRegistry/IAssetRegistry.h
Finds Package data for a package name. This data is only updated on save and can only be accessed for valid packages
[TOptional](API\Runtime\Core\IO\TOptional)< [FAssetPackageData](API\Runtime\CoreUObject\AssetRegistry\FAssetPackageData) > GetAssetPackageDataCopy ( [FName](API\Runtime\Core\UObject\FName) PackageName ) const